Chandra Data Archive Retrieval Statistics

Download Volume (Bytes)

This table provides the total number of MBytes of Chandra data
downloaded per month from the Chandra Data Archive and its mirror
sites at LEDAS, ASDC (Italy), IUCAA (India), and HEASARC. The numbers for
the CDA are split into different datatype categories.

The columns are:

Provisional Retrieval Interface

Data distribution of proprietary data to and by Guest Observer teams

Quicklook images (distributed soon after receipt of telemetry)

Caldb distributions

Prepackaged: special datasets, such as the deep field tar files
and the orbit ephemeris files

The anonymous ftp archive

WebChaSeR, using the ftp staging area

ChaSeR, using the ftp staging area

ChaSeR, using direct data transfer

Total download volume from LEDAS mirror (UK)

Total download volume from the anonymous ftp archive mirror at
ASDC (Italy)

Total download volume from the anonymous ftp archive mirror at
IUCAA (India)

Total downloads from the anonymous ftp archive mirror at HEASARC

Grand total download volume

Month & Year

ProvRetrI/f (MB)

GOs (MB)

QuickLook (MB)

Caldb (MB)

Prepack'd (MB)

ftp archive (MB)

WebChaser-ftp (MB)

Chaser-ftp (MB)

Chaser-dir (MB)

LEDAS(UK) (MB)

ASDC(ITALY) (MB)

IUCAA(INDIA) (MB)

HEASARC (MB)

TOTAL (MB)

Aug 1999

733.562368

0

0

0

0

0

0

0

0

0

0

0

0

733.562368

Sep 1999

17444.617559

0

0

0

0

0

0

0

0

0

0

0

0

17444.617559

Oct 1999

15114.904425

189.113344

0

0

66.680152

0

0

0

0

0

0

0

0

15370.697921

Nov 1999

9284.473884

16860.3264

0

0

17.30048

0

0

0

0

0

0

0

0

26162.100764

Dec 1999

18976.462654

16198.536704

0

0

68.72064

0

0

0

0

0

0

0

0

35243.719998

Jan 2000

13202.592527

12429.593088

0

0

0

0

0

0

0

0

0

0

0

25632.185615

Feb 2000

11565.170394

19626.459136

0

0

86.518784

0

0

0

0

0

0

0

0

31278.148314

Mar 2000

12481.373369

33487.55456

6.149496

0

250.473277

0

0

0

0

0

0

0

0

46225.550702

Apr 2000

7961.422849

43136.759296

8.091546

0

102.131136

0

0

0

0

0

0

0

0

51208.404827

May 2000

7726.775805

41290.774872

11.50864

0

98.758656

0

0

0

0

0

0

0

0

49127.817973

Jun 2000

10551.104167

31577.496641

8.185152

0

59.042368

0

0

0

0

0

0

0

0

42195.828328

Jul 2000

9450.003883

21565.298176

9.389737

0

66.927424

0

0

0

0

0

0

0

0

31091.61922

Aug 2000

5314.998126

30743.253954

11.305075

0

65.362816

0

0

0

0

0

0

0

0

36134.919971

Sep 2000

4123.058449

26281.896126

8.492469

0

0.67392

0

0

0

0

0

0

0

0

30414.120964

Oct 2000

5966.852483

34249.177128

12.328123

0

1.1664

0

0

0

0

0

0

0

0

40229.524134

Nov 2000

12313.706014

54398.702456

10.770171

0

0

0

0

0

0

0

0

0

0

66723.178641

Dec 2000

11098.798612

27786.193584

4.859713

54619.643771

55.581952

0

0

0

0

0

0

0

0

93565.077632

Jan 2001

23861.239282

37588.173824

9.104979

43014.548332

3.57696

0

0

0

0

0

0

0

0

104476.643377

Feb 2001

19700.974409

41247.343408

7.475954

19491.162892

0

0

0

0

0

0

0

0

0

80446.956663

Mar 2001

35683.728064

41149.43694

6.762135

20115.61734

3473.414908

0

0

0

0

0

0

0

0

100428.959387

Apr 2001

30519.914573

23097.603072

3.016275

11207.474116

21617.169121

0

0

0

0

0

0

0

0

86445.177157

May 2001

44820.548593

18307.897344

10.140956

11527.428524

8858.417396

0

0

0

0

0

0

0

0

83524.432813

Jun 2001

50238.764622

30439.862758

8.338545

14442.880818

5569.390904

0

0

0

0

0

0

0

0

100699.237647

Jul 2001

37363.049558

23165.090304

8.937734

11953.893798

4952.621053

0

0

467.621888

6620.4606415

0

0

0

0

84531.6749765

Aug 2001

32587.180772

27513.663488

6.018139

19586.311259

48630.845676

0

0

7832.198403

14145.222161

0

0

0

0

150301.439898

Sep 2001

43758.394765

12528.305152

7.570276

12206.671767

2837.81315

0

192.447488

5009.024392

9197.719105

0

0

0

0

85737.946095

Oct 2001

34085.161597

28514.153722

7.496638

30286.245615

5510.508424

0

142.77888

8378.318357

22865.5634155

0

0

0

0

129790.2266485

Nov 2001

53902.823862

25359.525888

7.422729

32830.782505

43750.855528

0

667.3152

47560.226983

23833.751292

0

0

0

0

227912.703987

Dec 2001

22655.207881

7574.199296

4.255889

30039.615855

703.904296

0

12416.52812

4303.244004

9687.883944

0

0

0

0

87384.839285

Jan 2002

23348.218141

17164.903683

8.218834

25434.900244

284.795795

0

21423.820232

8780.407184

12878.3385945

0

0

0

0

109323.6027075

Feb 2002

22548.816838

29821.369344

8.615378

32387.417853

6340.635855

0

68358.76188

15245.981433

38830.232044

0

0

0

0

213541.830625

Mar 2002

40922.441475

16283.078144

10.684608

35429.92449

18.765474

0

59758.849835

14925.165568

16755.531351

0

0

0

0

184104.440945

Apr 2002

19492.484261

13193.936896

7.02857

34121.342441

4359.153158

0

57530.12992

12132.846592

18633.761669

0

0

0

0

159470.683507

May 2002

23650.290744

19355.109888

21.389287

31760.50586

1106.324529

0

55303.822448

19583.284418

30355.702341

351.257493

0

0

0

181487.687008

Jun 2002

24712.960409

12146.940416

4.892846

21988.188725

451.323235

0

143220.596316

15844.401848

18837.881631

0

0

0

0

237207.185426

Jul 2002

41129.768464

18033.01602

6.875509

21769.326557

9061.888919

0

52401.851815

8459.996776

23385.312702

0

0

0

0

174248.036762

Aug 2002

33257.463135

27794.882986

4.981984

21693.837349

377.386023

0

39974.663124

7077.942272

23263.275256

21.61007

0

0

0

153466.042199

Sep 2002

29387.213111

13765.583954

7.843939

23699.800226

382.152354

7647.387529

34866.761656

17127.31092

20525.7849955

238.168883

0

0

0

147648.0075675

Oct 2002

39854.172438

13577.558016

7.182703

38810.085486

6867.421832

11042.64114

88378.077778

15759.872512

40819.4264855

12.335017

0

0

0

255128.7734075

Nov 2002

21125.049909

15208.637952

6.119284

60402.590002

3522.056259

7997.282908

47926.309849

13992.15104

19674.6064285

5.799936

0

0

0

189860.6035675

Dec 2002

19455.038073

8916.444672

7.968773

44728.692491

5861.470425

5334.876004

36452.447768

38066.504526

15714.715722

1247.300177

0

0

0

175785.458631

Jan 2003

33948.708254

17776.96768

9.840302

32059.889305

4527.15969

95764.880985

62787.850531

3093.940208

14203.5542545

950.227864

0

0

0

265123.0190735

Feb 2003

25331.641188

10726.975328

10.02168

51073.490112

194.492584

13809.434408

76046.56625

12341.5077

19727.719988

1850.450901

100.154795

0

0

211212.454934

Mar 2003

20452.017664

16937.3184

14.104297

36584.490124

5355.975415

12499.826899

55993.389665

16485.451776

14190.955664

1019.38283

870.25117

0

0

180403.163904

Apr 2003

10611.690496

14234.530304

8.887237

31013.861006

592.227606

5761.284366

35903.901472

6731.779299

18531.2480015

316.919504

567.463805

0

0

124273.7930965

May 2003

11361.617408

19023.2192

5.603917

31540.433061

960.8833

15426.248616

61827.823824

1474.239488

9079.127851

1283.88206

5797.838271

0

0

157780.916996

Jun 2003

829.410304

14715.212669

5.556105

29496.503534

23.149234

11836.347181

76548.209597

8832.188416

10634.198057

2108.640539

656.860227

0

0

155686.275863

Jul 2003

42166.976974

21910.44352

5.831344

27496.254298

1717.691936

75304.689209

77868.591192

50079.36

18152.848697

4951.51421

5798.986883

0

0

325453.188263

Aug 2003

29725.184448

18939.56352

19.553237

92913.898481

952.380419

7923.409652

48386.75714

14603.995648

23833.850893

908.910886

9821.33586

0

0

248028.840184

Sep 2003

60839.218176

14248.319488

25.885641

44445.126202

9.081161

13690.507895

47870.55084

7623.74607

7618.2503125

1570.692096

7255.438555

0

0

205196.8164365

Oct 2003

34803.520624

16078.06976

21.914586

42167.393845

317.962053

30566.334962

70741.761118

2960.894768

20953.1111515

5.81632

9823.68009

0

0

228440.4592775

Nov 2003

51424.457172

6667.033468

15.504582

30762.216801

1451.442175

17132.343489

61666.460548

7387.37414

8461.850808

386.368

11980.446144

0

0

197335.497327

Dec 2003

40338.927097

13280.244736

2.63693

55812.87739

152.587338

18089.506775

68615.958582

4749.140992

5631.8538915

1729.88672

5800.790308

0

0

214204.4107595

Jan 2004

20440.74464

15191.707136

4.91244

73019.274229

2326.497607

109535.152893

64980.478015

4062.575104

14905.2870825

2999.599104

227.229232

0

0

307693.4574825

Feb 2004

29883.3414

11773.523929

6.859372

72515.760853

1943.329566

50714.503978

111506.390208

4303.739392

24248.125017

1388.660627

93.569336

0

0

308377.803678

Mar 2004

25491.729952

23102.749184

7.191801

69443.223896

1389.14005

33898.677877

140727.893915

4837.666816

11980.6112495

0

0

0

0

310878.8847405

Apr 2004

20611.782184

17353.893376

3.836903

39264.553838

11.239847

64074.721898

51689.291776

3972.308992

20292.9367845

975.930368

7.9e-05

0

0

218250.4960455

May 2004

16424.187291

14261.553152

3.647206

30220.904323

1021.945792

94817.347074

181055.171119

10844.430761

42293.43055

1061.320192

18.334853

0

0

392022.272313

Jun 2004

14960.090892

12879.714096

7.309948

46926.337414

11183.025705

69666.378982

81561.766529

4573.565952

41662.421703

221.184049

0

0

0

283641.79527

Jul 2004

18294.21056

14992.64768

4.109188

99527.60134

21.464334

83091.19514

113234.882911

16454.528512

12053.679194

13495.61763

0

0

0

371169.936489

Aug 2004

13688.641024

16492.065792

4.586484

96407.3414

6099.67413

63739.774824

84286.48282

8648.2977

10899.0771945

2857.401209

0

0

0

303123.3425775

Sep 2004

16487.33696

15433.224192

4.525076

45532.502972

4601.767511

633953.555707

85647.143752

2225.593344

8392.4722625

2712.561411

0

0

0

814990.6831875

Oct 2004

78960.526076

0

3.236863

57717.846967

3369.506645

48536.056258

101244.469388

3899.706197

6675.474622

476.555264

0

0

0

300883.37828

Nov 2004

14250.802836

0

3.294149

54320.444756

731.422455

29987.802527

109222.976919

2078.29043

7149.6414275

1228.542976

0

0

0

218973.2184755

Dec 2004

13627.125869

22.086144

5.43169

91177.004663

525.16826

48402.923305

96050.803376

7530.619691

13329.3969105

839.090688

12379.918386

0

0

283889.5689825

Jan 2005

18037.115115

174.19264

2.53313

69727.219146

929.963573

142771.026302

116221.384064

50182.054444

17379.5388245

1260.005629

0

0

2854.633571

419539.6664385

Feb 2005

43195.835047

8.016896

2.994769

59263.113583

4317.506763

473787.381892

153327.348053

23429.231104

15990.84443

1713.380864

0.000686

0

11451.765889

786487.419976

Mar 2005

17810.761606

0

3.116823

51045.535521

11060.543545

684517.467392

136073.118362

18836.78276

35464.3655655

9e-05

34.280051

0

4.123874

954850.0955895

Apr 2005

17991.212056

315.961344

4.33403

38678.217407

6.166451

136920.100807

101045.807133

6747.628889

19875.6610685

0.032768

0

0

1337.247366

322922.3693195

May 2005

7912.136598

614.06208

3.880641

44146.144114

263.0814

73862.038724

147835.264512

959.315968

48688.9551

0.053656

0

0

3734.878254

328019.811047

Jun 2005

37573.68862

0

2.981416

57997.269605

19.502893

89702.583958

143326.152032

6649.330696

34784.5378715

180.5962

0

0

840.518921

371077.1622125

Jul 2005

41773.350494

0

3.135575

108246.140884

0.462737

69657.046808

152549.500424

16189.74464

25495.391817

1590.686304

0

0

4669.415443

420174.875126

Aug 2005

21502.109106

743.430656

2.538289

76748.932622

1883.010403

33255.538648

118071.364107

3585.603072

16641.574057

0

0

0

112.056053

272546.157013

Sep 2005

27919.120573

331.885056

1.585568

44754.404005

22.737898

99645.794284

68398.536896

12019.842048

28474.3420515

0

0

0

1009.866418

282578.1147975

Oct 2005

16783.289388

107.820032

2.092717

41903.715936

25.458464

119918.863449

21984.76196

10553.282304

7014.668618

624.302004

0

175.365471

3528.21093

222621.831273

Nov 2005

24323.189248

0

3.004401

106759.516729

433.193534

105486.32153

19994.389504

4709.633536

22492.728225

1408.748221

0

216.563091

20781.214339

306608.502358

Dec 2005

12716.444229

357.301248

3.113154

100283.801213

1035.863548

142222.886544

23769.490432

5923.974612

5630.6232805

737.943552

0.146168

492.413437

19310.545162

312484.5465795

Jan 2006

16627.020945

201.321472

2.473708

103788.159463

575.841271

215311.228808

16450.421248

1634.518228

9586.334836

0.032866

0.156572

2.441898

8767.948978

372947.900293

Feb 2006

8901.570272

469.584896

2.865466

97373.387692

447.080119

246951.298238

19123.267584

3252.62848

28287.203409

0.034816

156.569033

772.32128

26075.907021

431813.718306

Mar 2006

13623.480023

201.490432

3.499531

70596.487859

1535.512261

272781.80017

23187.797684

1611.041225

29105.726866

237.330993

61.412332

16.091767

2372.081227

415333.75237

Apr 2006

9704.404147

0

2.346028

55632.581048

232.406286

457790.595156

25229.581312

5824.833536

12145.2309975

152.828928

62.896532

1548.727276

8848.246478

577174.6777245

May 2006

8119.772528

0

2.737928

75271.548524

891.27546

267819.358294

27321.905664

3714.260992

8434.694951

277.921792

0.053497

0.406614

292792.522869

684646.459113

Jun 2006

6908.277248

104.167936

3.471534

65786.298956

866.024482

303530.999348

31361.552384

4979.26144

14125.2477105

412.907089

55.351265

28.79488

68549.573681

496711.9279535

Jul 2006

946.959157

0

3.088621

67511.697108

507.015205

294638.573577

27869.096448

4045.787648

4582.761823

0

0.02304

1.383822

19863.079666

419969.466115

Aug 2006

215.401472

0

0.686944

69296.09759

245.89156

459956.876536

16156.623989

13162.864128

14473.349877

0

0

1514.06276

51047.498663

626069.353519

Sep 2006

27.779584

131.470336

1.357814

71825.426594

987.471698

333193.84013

18727.648768

7902.716928

13938.337729

0

0

795.502911

726.524171

448258.076663

Oct 2006

509.646848

0

3.183386

57331.204003

811.935064

351343.277699

16865.67168

513.670144

4581.324295

0

30.016883

0

4448.677972

436438.607974

Nov 2006

0

0

2.211536

100110.533889

14585.499115

353764.128753

18376.640512

2158.067712

11896.864515

1.359921

310.981091

0.305893

26911.62797

528118.220907

Dec 2006

0

0

1.948517

143737.99095

26081.681892

290077.150467

15130.161152

1527.543808

9319.602646

0.037432

0

0.842827

70252.734813

556129.694504

Jan 2007

0

0

1.671179

244029.880514

9887.613801

313581.309286

6144.133568

5138.927616

8212.6168225

0

0

0.522872

95130.827425

682127.5030835

Feb 2007

0

37.03808

1.7744

194008.932468

175.322908

296632.659138

9984.985088

1777.653759

11414.496651

0

0

0

14133.184619

528166.047111

Mar 2007

0

0

2.294844

150703.329583

4.173044

408777.556835

5151.42656

948.7872

4337.3516055

23.698059

0

0.017665

56243.375519

626192.0109145

Apr 2007

0

0

0.668713

127951.87149

393.6948

242149.448295

10079.660032

5324.869632

2835.536187

0.016433

0

2851.355919

8450.451698

400037.573199

May 2007

0

0

1.400351

164602.317453

818.676839

336062.808249

11375.572992

1857.61792

4178.7095815

387.404337

10.24

0.556556

31139.172765

550434.4770435

Jun 2007

0

0

3.350405

172891.819254

810.466139

453413.194347

25935.417344

3577.93792

2214.2204575

0

0

3.795927

54258.14407

713108.3458635

Jul 2007

0

0

1.82035

173865.812022

877.716098

350086.752642

11005.696

35.897344

8650.366422

707.713634

0

3.681747

3518.317227

548753.773486

Aug 2007

0

0

2.038368

146240.576782

6.708147

346539.756442

31553.660928

1432.86272

1413.3370565

0.163889

0

1.603373

24917.384694

552108.0923995

Sep 2007

0

38.63552

2.142686

135909.610047

977.897135

252327.24934

19860.078592

1415.8848

7448.4682755

0.065626

0

0.77186

123088.25542

541069.0593015

Oct 2007

0

0

1.83904

146506.610598

828.676302

236292.852375

17643.730944

2469.210112

4451.2265225

0

0

1.259402

100208.383129

508403.7884245

Nov 2007

0

0

1.470875

140537.887684

5.365704

239933.153537

9293.959168

185.16992

5461.3430485

0

0

2661.574491

14162.175505

412242.0999325

Dec 2007

0

0

2.077722

166725.951942

3376.626498

214548.063459

13295.398912

1465.808896

5760.0609625

0

771.903069

3174.2768

148535.10248

557655.2707405

Jan 2008

0

0

2.62116

550109.267514

12242.095378

238423.239987

16042.698752

1758.55616

9547.193966

0

0

526.332047

33862.089493

862514.094457

Feb 2008

0

0

2.148873

167434.043811

46381.932764

317384.725007

27130.435584

10252.57472

21195.1476835

0

18.383553

343.204508

438551.553736

1028694.1502395

Mar 2008

0

0

1.846314

154765.283672

14498.243186

331444.486561

4034.861056

658.47296

1448.8516975

0

0

92.817563

36846.769215

543791.6322245

Apr 2008

0

0

2.027507

197537.769547

1258.139434

444450.797073

12674.619392

2381.350912

4179.983493

0

13.267256

2005.032594

49030.643412

713533.63062

May 2008

0

0

5.663678

185792.553723

4949.814186

339216.959066

18781.966336

15771.219402

11286.938934

0

0

527.494109

34967.849163

611300.458597

Jun 2008

0

0

1.643817

191130.419912

2948.582016

220567.06647

12762.546176

2205.62432

12917.154681

0

0

0.053178

36108.053496

478641.144066

Jul 2008

0

0

1.693969

204803.802027

2272.194512

298187.450378

13891.874816

4796.780544

53002.6290705

0

0

0

111277.070009

688233.4953255

Aug 2008

0

0

0.578305

96626.963701

2015.8893

471229.992625

14255.060992

14674.71872

7048.5588345

0

0

0

29157.736905

635009.4993825

Sep 2008

0

0

1.4674

176698.857986

1249.782912

811374.58785

8167.981056

4635.020479

8187.632208

0

0.20002

0

212936.112584

1223251.642495

Oct 2008

0

0

1.091807

163624.390705

85.25259

736937.821135

7041.672613

1220.73088

6303.821451

0

0

0

235661.892515

1150876.673696

Nov 2008

0

0

1.150992

157409.359509

1572.317448

771074.171175

9053.582857

12432.16896

4886.853256

0

0

0

205467.425798

1161897.029995

Dec 2008

0

0

3.301201

257945.810544

9966.007467

500992.158863

30621.794304

14198.294528

10453.116496

0

0

0

92761.62827

916942.111673

Jan 2009

0

0

1.965014

279024.986278

2645.920309

640862.09721

10350.511935

33915.621376

9015.214113

0

0

0

44549.637375

1020365.95361

Feb 2009

0

0

2.920299

269340.107808

879.198273

390184.925122

13268.743546

8029.92128

23498.838051

0

0

6.814024

202621.796327

907833.26473

Mar 2009

0

0

1.034088

212056.923476

1116.106791

386629.912449

20245.460992

767.50848

26481.4559505

0

0

0

214424.823506

861723.2257325

Apr 2009

0

0

0.488328

271758.278833

2436.159983

285167.181181

29806.963626

13582.278656

41265.3971635

0

0

8838.981487

44600.104068

697455.8333255

May 2009

0

0

2.92493

229526.916961

1176.002223

281314.171384

29848.481264

14275.81952

10488.432063

0

2.92768

0

98949.046358

665584.722383

Jun 2009

0

0

0.702584

280585.915475

60.395922

335482.906044

34973.493248

17454.08

6810.514644

0

3.192028

143.76312

993.97314

676508.936205

Jul 2009

0

0

1.665903

326321.185635

3817.597478

314561.583112

26689.533952

1512.40704

9504.3786295

0

293.124034

66.110754

60455.339517

743222.9260545

Aug 2009

0

0

0

199213.116643

2111.928973

348115.115848

18653.980672

511.762432

14304.7256865

0

0

0.16128

26121.619892

609032.4114265

Sep 2009

0

0

0

262511.089072

430.569736

192884.189752

28144.19968

12473.631818

13827.8519595

0

0

0

217420.951914

727692.4839315

Oct 2009

0

0

0

217027.271064

1274.076541

248847.763112

22475.764487

1611.17184

18736.9340915

0

7.583848

0

107331.665126

617312.2301095

Nov 2009

0

0

0

326849.159993

1450.653608

219408.441695

19617.417216

1157.23264

392.858722

0

0

0

22076.161972

590951.925846

Dec 2009

0

0

0

372727.011768

4920.165749

291839.552583

21342.214144

2699.9808

3681.554863

0

0

0

127106.977642

824317.457549

Jan 2010

0

0

0.029194

306823.149339

3506.979043

316897.781212

25119.318016

9171.15904

18113.6839225

0

0

0

29549.073462

709181.1732285

Feb 2010

0

0

0.49733

243272.064664

2048.429973

256190.484992

17081.67168

28548.784128

9778.5767475

0

0

0

76504.988579

633425.4980935

Mar 2010

0

0

1.326946

266362.81045

2315.436553

354505.328072

15847.747584

13876.320256

4995.334239

0

0

0

0

657904.3041

Apr 2010

0

0

1.589081

372432.528997

553.237655

431618.609695

30274.786787

5152.79872

1141.556279

0

0

0

0

841175.107214

May 2010

0

0

1.119143

277931.911116

1453.04977

255917.171977

14182.964472

2432.1536

21067.3552585

0

0.176064

0

0

572985.9014005

Jun 2010

0

0

1.89119

395742.481271

1729.533116

262906.999307

25109.741568

8914.292736

13367.9225395

0

0

545.697936

0

708318.5596635

Jul 2010

0

0

3.744333

537511.012562

5954.080263

277258.116694

27242.698752

8578.00704

20411.4258235

0

0

213.525368

31507.419687

908680.0305225

Aug 2010

0

0

4.421791

294338.968948

37226.585735

892718.102364

35530.399744

5557.235712

2536.719543

0

0

1.704885

50704.474079

1318618.612801

Sep 2010

0

0

0.294759

396032.398084

48352.801602

423003.143238

26626.336912

4324.52608

50723.5966445

0

0

43523.048186

61669.514456

1054255.6599615

Oct 2010

0

0

1.298857

433612.3797

24249.716223

344918.702879

18065.737728

3855.446016

16791.967523

0

1218.1851

169224.44371

74827.525899

1086765.403635

Nov 2010

0

0

3.358185

254525.996472

4510.044033

278941.166796

19430.598656

8993.92512

4929.180379

0

0

114692.424953

44255.12361

730281.818204

Dec 2010

0

0

2.793398

731099.837077

19390.547911

385490.018059

12881.446128

26977.466368

5881.312581

0

0

246889.915739

94732.122788

1523345.460049

Jan 2011

0

0

3.630021

401321.765564

5993.421022

369227.649971

27539.120128

5165.041664

1634.7675725

0

0

246593.121457

34156.265474

1091634.7828735

Feb 2011

0

0

3.176115

459126.623944

7483.532322

556857.765447

29670.371328

2018.85696

36788.1496795

0

0

352517.262367

17079.405299

1461545.1434615

Mar 2011

0

0

5.217286

658221.889125

7977.757404

602122.485546

31063.757518

12982.44608

29723.457101

0

0

357618.845331

64868.197007

1764584.052398

Apr 2011

0

0

2.174924

403636.802657

8749.309455

565910.340509

20168.122368

2269.0304

8024.4855835

0

0

249614.786558

27554.917123

1285929.9695775

May 2011

0

0

5.154842

429158.756413

5196.206083

717665.287443

43247.523032

809.920512

4365.7131595

0

0

202952.37473

39060.443666

1442461.3798805

Jun 2011

0

0

2.776316

460176.248421

2422.095047

436300.538946

26171.994112

15948.19584

5503.067612

0

0

325778.070922

17862.768868

1290165.756084

Jul 2011

0

0

2.199917

526305.214813

3037.791778

644250.826814

16723.28804

119.16288

2606.1485945

0

0

297128.391588

58917.867786

1549090.8922105

Aug 2011

0

0

5.123842

428017.942714

4601.489032

622811.60662

21228.378112

3743.817728

839.754869

0

8.418236

289900.518747

20467.747052

1391624.796952

Sep 2011

0

0

1.722593

466865.40232

4255.555605

632477.933494

14458.210304

13563.98592

4955.342401

0

0

8414.520468

9007.020926

1153999.694031

Oct 2011

0

0

5.051566

359306.046764

2629.210026

868574.912844

137268.404216

8436.62336

5324.5987785

0

0

353269.509819

70196.456242

1805010.8136155

Nov 2011

0

0

7.422693

423801.410783

10583.930426

0

41689.614336

27214.501888

10186.527448

0

0

412477.207633

47540.107833

973500.72304

Dec 2011

0

0

4.773427

591531.507565

7218.991314

326788.371405

12934.944768

19024.7936

611.1623285

0

0

418304.896004

50532.084612

1426951.5250235

Jan 2012

0

0

7.165459

629031.052914

5458.570305

373811.873185

19579.95708

669.7472

723.4255815

0

0

503927.29559

103920.293083

1637129.3803975

Feb 2012

0

0

3.480741

610769.727245

432.82449

718131.377992

32077.63968

15351.1424

4441.0295665

0

0

379691.255993

70365.784607

1831264.2627145

Mar 2012

0

0

2.482419

501781.182151

2424.407997

1388152.130908

23033.36448

11245.930496

4957.146326

0

0

345709.022049

25579.732047

2302885.398873

Apr 2012

0

0

2.372088

372166.424407

8995.67684

1881844.60003

17406.193936

3616.41984

9.60768

0

0

393744.37298

12714.058312

2690499.726113

May 2012

0

0

3.775201

430133.601998

207.793668

1187009.820133

14090.409984

2932.790616

2371.088806

0

22.615273

248524.109531

10532.657224

1895828.662434

Jun 2012

0

0

3.51808

445139.591058

240.411623

1823541.540825

19861.563952

1266.91328

675.075875

0

0

212393.368663

65883.834503

2569005.817859

Jul 2012

0

0

3.519204

497564.522717

6670.778764

642740.613886

20785.129024

2244.23936

3834.176086

0

0

213864.854756

75724.368765

1463432.202562

Aug 2012

0

0

1.431

361124.628525

4088.528807

954168.038756

24176.359368

5570.3552

872.7321375

0

0

217249.249536

22537.268736

1589788.5920655

Sep 2012

0

0

4.168216

384771.901059

3038.975396

813257.134619

17721.434112

269.32224

777.2090145

0

0

230881.075019

91390.229486

1542111.4491615

Oct 2012

0

0

7.9824

620183.562812

3308.854536

725383.697515

22599.34578

10035.44576

1259.2845345

0

0

168398.517056

78602.673913

1629779.3643065

Nov 2012

0

0

7.035463

364384.141648

2338.214157

860422.722167

16594.061312

0

0

0

0

95205.137468

47417.997553

1386369.309768

Dec 2012

0

0

4.416414

598009.204931

1631.631886

962520.312713

36493.8134

12439.86944

0

0

0

497413.516593

33612.24493

2142125.010307

Jan 2013

0

0

4.437685

610712.86506

1996.375507

1439388.714922

18976.823296

0

1032.84695

0

63.565684

449526.849061

78535.961195

2600238.43936

Feb 2013

0

0

3.361877

514505.696541

5202.678178

2174037.615707

36028.125376

0

2547.8954865

0

0

0.165698

30889.198838

2763214.7377015

Mar 2013

0

0

5.340993

524868.973452

541.998789

1097755.2072

25787.854848

0

6002.27863

0

0

46.783436

16664.127412

1671672.56476

Apr 2013

0

0

6.71999

722810.612198

1025.51042

691857.685101

7649.488896

0

0

0

0

87.195962

16320.943037

1439758.155604

May 2013

0

0

3.788948

480139.4118

1903.324693

1077716.038906

23778.275328

0

0

0

0.73536

0.083278

64933.790646

1648475.448959

Jun 2013

0

0

2.324408

533119.38073

3031.367929

1483036.149176

17790.853544

0

0

0

0

0

70465.23099

2107445.306777

Jul 2013

0

0

3.313582

451696.337314

1673.307753

1491875.729442

26732.009712

0

0

0

0

0

33018.09189

2004998.789693

Aug 2013

0

0

2.636263

549663.174134

5201.30773

3629193.12361

86304.339032

0

0

0

3.924368

0

23814.223311

4294182.728448

Sep 2013

0

0

7.70809

436860.767649

773.682665

744405.562359

56750.086216

0

332.40102

0

0

0

12872.49907

1252002.707069

Oct 2013

0

0

4.752606

510689.247064

10529.617638

2227461.981438

26897.278976

0

0

0

0.000806

0

355.687797

2775938.566325

Nov 2013

0

0

4.184286

676478.911332

4983.504076

564190.182545

17773.637632

0

0

0

0

0

28819.521173

1292249.941044

Dec 2013

0

0

4.966151

711987.612483

1769.258079

819679.271489

12755.658752

0

0

0

0

0

590.885461

1546787.652415

Jan 2014

0

0

4.300906

226582.459342

9076.242848

1209753.86782

30989.737984

0

0

0

0

0

0

1476406.6089

Feb 2014

0

0

3.390299

58090.571148

81.877064

1574601.242497

93091.026944

0

0

0

0

0

0

1725868.107952

Mar 2014

0

0

3.891785

118403.490954

1446.165996

2246863.88527

20895.779232

0

0

0

0

0

0

2387613.213237

Apr 2014

0

0

3.823361

820332.029368

2062.099118

1864992.954641

26076.760064

0

99.1072255

0

0

0

0

2713566.7737775

May 2014

0

0

1.098008

45953.650339

61.563901

1396352.583903

93298.634868

0

0

0

0

0

0

1535667.531019

Jun 2014

0

0

3.749965

30202.793542

829.910914

1937545.229459

1581.11744

0

0

0

0

0

0

1970162.80132

Jul 2014

0

0

0.647749

164873.742865

295.997481

1233886.332944

11263.756288

0

0

0

0

0

0

1410320.477327

Aug 2014

0

0

1.420232

55487.69578

17.087358

1619135.575183

1517.19936

0

0

0

0

0

0

1676158.977913

Sep 2014

0

0

3.789795

78483.725302

148.623153

1004498.658554

12192.395264

0

0

0

0

0

0

1095327.192068

Oct 2014

0

0

1.925138

52097.290835

5432.141094

1889139.613616

1962.143744

0

0

0

0

0

0

1948633.114427

Nov 2014

0

0

5.758097

620802.387449

7722.565842

1645089.934754

11559.689424

0

0

0

0

0

0

2285180.335566

Dec 2014

0

0

2.345038

79670.673027

3892.098085

1769300.200229

10686.4128

0

0

0

0

0

0

1863551.729179

Jan 2015

0

0

5.735447

81022.822736

1177.634588

1027887.121136

42431.285456

0

0

0

0

0

0

1152524.599363

Feb 2015

0

0

3.246041

67462.476507

3203.452473

1166730.054324

8203.06944

0

0

0

0

0

0

1245602.298785

Mar 2015

0

0

0.842677

13852.441308

0

169512.37522

5581.95712

0

0

0

0

0

0

188947.616325

Month/Year

ProvRetrI/f (MB)

GOs (MB)

QuickLook (MB)

Caldb (MB)

Prepack'd (MB)

ftp archive (MB)

WebChaser-ftp (MB)

Chaser-ftp (MB)

Chaser-dir (MB)

LEDAS(UK) (MB)

ASDC(ITALY) (MB)

IUCAA(INDIA) (MB)

HEASARC (MB)

TOTAL (MB)

ALL

1939445

1261445

826

36646665

777004

83156303

6446610

1202386

1894416

56934

74340

8073138

5943911

147473427

Download Volume (Number of Files)

This table provides the total number of files (largely tarfiles) that
were downloaded per month from the Chandra Data Archive and its mirror
sites at LEDAS, ASDC (Italy), IUCAA (India), and HEASARC. The numbers for
the CDA are split into different datatype categories.